Root code execution via unbounded ip formatting
Published Aug 25, 2022 · Updated Aug 3, 2024
Stack-based buffer overflow in TOTOLINK A3700R 9.1.2u.6134_B20201202 allows attackers to execute code through a crafted diagnostic request. The setDiagnosisCfg function passes the attacker-controlled ip value to sprintf without a length limit, overflowing the stack buffer used for V6. The published HTTP request includes a session cookie, while the proof reports that control-flow hijacking yields a root shell without authorization.
Summary
What happened
Stack-based buffer overflow in TOTOLINK A3700R 9.1.2u.6134_B20201202 allows attackers to execute code through a crafted diagnostic request. The setDiagnosisCfg function passes the attacker-controlled ip value to sprintf without a length limit, overflowing the stack buffer used for V6. The published HTTP request includes a session cookie, while the proof reports that control-flow hijacking yields a root shell without authorization.
The record
- CVE
- CVE-2022-36466
- Published
- Aug 25, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 25, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- TOTOLink A3700R setDiagnosisCfg proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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